2010 3.6 03-06

2009 3.5 03-09

2008 3.4 03-09

2007 3.3 03-05

2006 3.2 03-02

2005 3.1 03-01

2004 2.28 03-06

2003 2.27 02-27

2002 2.26 02-26

2001 2.25 02-26

2000 2.24 02-24

1999 2.23 02-24

1998 2.22 02-23

1997 2.21 02-22

1996 2.20 02-21

1995 2.19 02-19

1994 2.18 02-18

1993 2.17 02-17

1992 2.16 02-19

1991 2.15 02-15

1990 2.14 02-14

1989 2.13 02-13

1988 2.12 02-12

1987 2.11 02-11

1986 2.10 02-10

1985 2.9 02-09

1984 2.8 02-08

1983 2.7 02-08

1982 2.6 02-06

1981 2.5 02-05

1980 2.4 02-04

1979 2.3 02-04

1978 2.2 02-02

1977 2.1 02-01

1976 1.31 01-31

1975 1.30 01-31

1974 1.29 01-30

1973 1.28 01-28

1972 1.27 01-28

1971 1.26 01-27